package com.njitzx.controller;

import cn.hutool.json.JSONObject;
import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.internal.util.AlipaySignature;
import com.alipay.api.request.AlipayTradePagePayRequest;

import com.njitzx.config.AliPayConfig;
import com.njitzx.en.OrderEnum;
import com.njitzx.en.PayMethodEnum;
import com.njitzx.entity.po.Order;
import com.njitzx.entity.vo.Result;
import com.njitzx.service.OrderService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.HashMap;
import java.util.Map;

//  https://natapp.cn/
// ekihat7647@sandbox.com
@RestController
@RequestMapping("/alipay")
@Slf4j
public class PayController {

    // 支付宝沙箱网关地址
    private static final String GATEWAY_URL = "https://openapi-sandbox.dl.alipaydev.com/gateway.do";
    private static final String FORMAT = "JSON";
    private static final String CHARSET = "UTF-8";
    //签名方式
    private static final String SIGN_TYPE = "RSA2";

    @Resource
    private AliPayConfig aliPayConfig;

    @Resource
    private OrderService ordersService;

    //    @PostMapping("/pay")  //  /alipay/pay?orderNo=xxx
//    public Result pay(@RequestBody Map<String, Object> map, HttpServletResponse httpResponse) throws Exception {
//        // 用户点击支付后 发起支付请求
//        String orderNo = (String) map.get("orderNo");
//        Integer totalAmount = (Integer) map.get("totalAmount");
//        String subject = (String) map.get("subject");
//        System.out.println(map);
//        // 1. 创建Client，通用SDK提供的Client，负责调用支付宝的API
//        AlipayClient alipayClient = new DefaultAlipayClient(GATEWAY_URL, aliPayConfig.getAppId(),
//                aliPayConfig.getAppPrivateKey(), FORMAT, CHARSET, aliPayConfig.getAlipayPublicKey(), SIGN_TYPE);
//
//        // 2. 创建 Request并设置Request参数
//        AlipayTradePagePayRequest request = new AlipayTradePagePayRequest();  // 发送请求的 Request类
//        request.setNotifyUrl(aliPayConfig.getNotifyUrl());
//        JSONObject bizContent = new JSONObject();
//        bizContent.set("out_trade_no", orderNo);  // 我们自己生成的订单编号
//        bizContent.set("total_amount", totalAmount); // 订单的总金额
//        bizContent.set("subject", subject);   // 支付的名称
//        bizContent.set("product_code", "FAST_INSTANT_TRADE_PAY");  // 固定配置
//        request.setBizContent(bizContent.toString());
//        request.setReturnUrl("http://localhost:8888/#/orders"); // 支付完成后自动跳转到本地页面的路径
//        // 执行请求，拿到响应的结果，返回给浏览器
//        String form = "";
//        try {
//            form = alipayClient.pageExecute(request).getBody(); // 调用SDK生成表单
//        } catch (AlipayApiException e) {
//            e.printStackTrace();
//        }
//        httpResponse.setContentType("text/html;charset=" + CHARSET);
//        httpResponse.getWriter().write(form);// 直接将完整的表单html输出到页面
//        httpResponse.getWriter().flush();
//        httpResponse.getWriter().close();
//    }
    @PostMapping("/pay")
    public Result pay(@RequestBody Map<String, Object> map) throws Exception {
        String orderNo = (String) map.get("orderNo");
        Double totalAmount = Double.parseDouble(map.get("totalAmount") + "");
        String subject = (String) map.get("subject");
        String sub = subject.substring(subject.lastIndexOf(":"));

        // 创建AlipayClient实例
        AlipayClient alipayClient = new DefaultAlipayClient(GATEWAY_URL, aliPayConfig.getAppId(),
                aliPayConfig.getAppPrivateKey(), FORMAT, CHARSET, aliPayConfig.getAlipayPublicKey(), SIGN_TYPE);

        // 创建支付请求
        AlipayTradePagePayRequest request = new AlipayTradePagePayRequest();
        log.info("回调地址{}", aliPayConfig.getNotifyUrl());
        System.out.println("noti" + aliPayConfig.getNotifyUrl());
        request.setNotifyUrl(aliPayConfig.getNotifyUrl());
        request.setReturnUrl("http://localhost:8888/#/orders"); //回调地址

        // 设置支付请求参数
        JSONObject bizContent = new JSONObject();
        bizContent.put("out_trade_no", orderNo);
        bizContent.put("total_amount", totalAmount);
        bizContent.put("subject", "支付人" + sub);
        bizContent.put("product_code", "FAST_INSTANT_TRADE_PAY");
        request.setBizContent(bizContent.toString());
        // 执行请求，获取支付表单
        String form;
        try {
            form = alipayClient.pageExecute(request).getBody();
        } catch (AlipayApiException e) {
            e.printStackTrace();
            return new Result(500, "支付请求失败", null);  // 返回错误信息
        }
        return new Result(200, "支付表单生成成功", form);  // 成功时返回支付表单
    }

    @PostMapping("/notify")  // 注意这里必须是POST接口
    public void payNotify(HttpServletRequest request) throws Exception {
        if (request.getParameter("trade_status").equals("TRADE_SUCCESS")) {
            System.out.println("=========支付宝异步回调========");

            Map<String, String> params = new HashMap<>();
            Map<String, String[]> requestParams = request.getParameterMap();
            for (String name : requestParams.keySet()) {
                params.put(name, request.getParameter(name));
            }

            String sign = params.get("sign");
            String content = AlipaySignature.getSignCheckContentV1(params);
            boolean checkSignature = AlipaySignature.rsa256CheckContent(content, sign, aliPayConfig.getAlipayPublicKey(), "UTF-8"); // 验证签名
            // 支付宝验签
            System.out.println(checkSignature == true);
            if (checkSignature) {
                // 验签通过
//                System.out.println("交易名称: " + params.get("subject"));
//                System.out.println("交易状态: " + params.get("trade_status"));
//                System.out.println("支付宝交易凭证号: " + params.get("trade_no"));
//                System.out.println("商户订单号: " + params.get("out_trade_no"));
//                System.out.println("交易金额: " + params.get("total_amount"));
//                System.out.println("买家在支付宝唯一id: " + params.get("buyer_id"));
//                System.out.println("买家付款时间: " + params.get("gmt_payment"));
//                System.out.println("买家付款金额: " + params.get("buyer_pay_amount"));
                String tradeNo = params.get("out_trade_no");
//                String gmtPayment = params.get("gmt_payment");
//                String alipayTradeNo = params.get("trade_no");
                // 更新订单状态为已支付，设置支付信息
                Order orders = ordersService.selectByOrderNumber(tradeNo);
                orders.setStatus(Integer.parseInt(OrderEnum.RECEIVE.getCode())); //设置状态
                orders.setPayMethod(PayMethodEnum.SEND.getCode());
                ordersService.modify(orders);
            }
            System.out.println("完成通知");
        }
    }


}
